package pers.mingshan.thread.thread;

import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

/**
 * 线程通信
 * @author mingshan
 *
 */
public class ConditionDemo {

    public static void main(String[] args) {
        final Business business = new Business();
        new Thread(
            new Runnable() {
                @Override
                public void run() {
                    for (int i = 1; i <= 50; i++) {
                        business.sub(i);
                    }
                }
            }
        ).start();

        for (int i = 1;i <= 50;i++) {
            business.main(i);
        }
    }

    static class Business {
        Lock lock = new ReentrantLock();
        Condition condition = lock.newCondition();
        private boolean bShouldSub = true;
        public  void sub(int i) {
            lock.lock();
            try{
                while (!bShouldSub){
                    try {
                        condition.await();
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                  }

                  for (int j = 1; j <= 10;j++) {
                      System.out.println("sub thread sequence of " + j + ",loop of " + i);
                  }

                  bShouldSub = false;
                  condition.signal();
            }finally{
                lock.unlock();
            }
        }

        public void main(int i) {
            lock.lock();
            try {
                while(bShouldSub) {
                    try {
                         condition.await();
                    } catch (Exception e) {
                         e.printStackTrace();
                    }
                }
    
                for (int j = 1; j <= 100; j++) {
                    System.out.println("main thread sequence of " + j + ",loop of " + i);
                }
    
                bShouldSub = true;
                condition.signal();
            }finally{
                  lock.unlock();
            }
        }
    }
}
